Diagnostic Ultrasound - Abdomen and Pelvis

Bowel
Urinary bladder
RECTOSIGMOID REGION
Anatomy: Abdomen
Prostate gland
Anterior wall of rectosigmoid
Bladder
Seminal vesicles
Anterior wall of rectum
Bladder
Base of prostate gland
Lower rectum
Puborectalis
(Top) Midline sagittal ultrasound in a male patient shows the anterior wall of the rectosigmoid region and its relationship to the
prostate gland anteriorly. (Middle) Transverse ultrasound through the pelvis in the same patient (with cystic fibrosis) shows the anterior
wall of the rectosigmoid region and its relationship to the seminal vesicles anteriorly (note the small seminal vesicles seen here).
(Bottom) Transverse ultrasound at a lower level in the same patient shows the lower rectum, pelvic floor, and anterior relationship to
the prostate gland.
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